CD 45 on FF and BFN

Long story but the subject of this thread is basically the short version, and any advice would be gratefully recieved!

I came off the pill in Dec and my cycles have been all over the place in terms of length, the shortest was the usual 28 days but the longest was my last was 40 days! Which I tested and got 3 BFN's before AF finally turned up! (TMI warning) but it was alot thicker and heavier than I am used to. When I was having my meltdown last cycle some ladies on here advised me to start temping to help me figure out when I ov'd and then when I could expect to be due, which I have been doing as religiously as I could for my first time, (its been a steep learning curve) but feel like I have the hang of it. As far as I can figure out I should have got AF on CD38, which makes sense(ish) becuase it's between my average of 34 days and the 40days. But I'm now on CD45 took HPT on CD42 and got BFN, now holding off because I can't handle the disappointment!
However, my story doesn't end there and gets more complicated. I'm not sure if this had/is having any affect on my body but during my last cycle I had a bad fall and hurt my back, my doctor has out my on strong painkillers called narproxen (which state that it can affect TTC, so I haven't been trying very hard this month, I was using this as a practise temp month to see if I could spot any patterns and was going to OPK next cycle). I keep checking for other side effects of this tablet on menstruation but coming up with nothing. Since starting these painkillers, I have basically had constant back and stomach ache like period pains, so its hard to say I've had no AF symptons, but I haven't. I'm desperately trying not to get my hopes up, but wondered if I had a faulty batch of HPT they are only internet cheapies and I made sure it was fmu!
:? :? :?
So sorry this is so long and any advice is welcomed - just needed someone to talk to haven't told anyone we are TTC and OH is away ATM. :cry:
Jo xxx

Not sure about the painkillers but strong ones may well mess with your body a bit.
As for cycles, I came off the pill last august and mine ranged from 63-31 days!! And it was totally random rather than getting shorter. It's awful not knowing.

I'd try a clear blue test as Internet ones aren't great for some people. I mc first month and had positive tests on cb but neg on Internet cheapies.

Really hope it's just the tests but if not keep trying. I've just got my bfp after 13 months of crazy cycles!! I tried temping and it didn't work for me (partly cause I got bored after 60+ days!)

Wow I think I'd crack up at 60+ days!! Thank you for replying! I do have a CBD in my drawer but I've been holding out on it as I don't want to read the dreaded words!
Congratualtions on your BFP, its reassuring to know that its possible even with crazy cycles!
It's so furstrating becuase I've just gone past the 6 month stage of being off the pill, so thought now its all out of my system my cycles would have settled down instead of getting longer?!?!
Good Luck with your pregnancy. I knew I could rely on you lovely ladies!
xxx